CN113399801A - Welding device and welding system for inhibiting welding heat cracks - Google Patents
Welding device and welding system for inhibiting welding heat cracks Download PDFInfo
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- CN113399801A CN113399801A CN202110648169.8A CN202110648169A CN113399801A CN 113399801 A CN113399801 A CN 113399801A CN 202110648169 A CN202110648169 A CN 202110648169A CN 113399801 A CN113399801 A CN 113399801A
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- 238000003466 welding Methods 0.000 title claims abstract description 150
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims description 11
- 230000000670 limiting effect Effects 0.000 claims description 8
- 238000005336 cracking Methods 0.000 claims 1
- 229910001338 liquidmetal Inorganic materials 0.000 abstract description 31
- 238000010891 electric arc Methods 0.000 abstract description 12
- 239000012535 impurity Substances 0.000 abstract description 12
- 238000005204 segregation Methods 0.000 abstract description 9
- 230000010355 oscillation Effects 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 25
- 239000007788 liquid Substances 0.000 description 20
- 230000008569 process Effects 0.000 description 20
- 230000002829 reductive effect Effects 0.000 description 12
- 230000005496 eutectics Effects 0.000 description 11
- 238000002844 melting Methods 0.000 description 11
- 230000008018 melting Effects 0.000 description 10
- 229910000838 Al alloy Inorganic materials 0.000 description 9
- 238000005452 bending Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000000717 retained effect Effects 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 210000001787 dendrite Anatomy 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000035876 healing Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000004227 thermal cracking Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 210000005067 joint tissue Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/0216—Seam profiling, e.g. weaving, multilayer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/325—Devices for supplying or evacuating shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/122—Devices for guiding electrodes, e.g. guide tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/124—Circuits or methods for feeding welding wire
- B23K9/125—Feeding of electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
- B23K9/29—Supporting devices adapted for making use of shielding means
- B23K9/291—Supporting devices adapted for making use of shielding means the shielding means being a gas
- B23K9/295—Supporting devices adapted for making use of shielding means the shielding means being a gas using consumable electrode-wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a welding device and a welding system for inhibiting welding heat cracks, wherein the device comprises: the first fixing plate and the second fixing plate are arranged at intervals; the gas-electric slip ring and one side of the first fixing plate, which faces the second fixing plate, are connected with the hollow shaft driving unit and one side of the second fixing plate, which faces the first fixing plate; the conductive connecting rod is connected with the hollow shaft driving unit and penetrates through the second fixing plate; the bent conductive nozzle is connected with the conductive connecting rod at the outer side of the second fixing plate; the plurality of support rods are uniformly distributed around the axial direction of rotation of the hollow shaft driving unit and are respectively connected with the first fixing plate and the second fixing plate; the hollow shaft driving unit drives the conductive connecting rod to rotate, and the conductive connecting rod drives the bent conductive nozzle to swing. The invention promotes the flow of liquid metal, refines the grain structure of the welding seam, reduces the segregation of impurity elements, enables the liquid metal to flow back to a grain boundary liquefaction area of a heat affected zone from a molten pool area through the electric arc oscillation, reduces the generation of cracks and increases the resistance of crack propagation.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a welding device and a welding system for inhibiting welding thermal cracks.
Background
The aluminum alloy material has the advantages of high specific strength, good plasticity, corrosion resistance and the like, is widely used as a light bearing structure in rail transit, high-speed rail and aerospace, and plays an important role in the field of light weight of delivery vehicles. Welding hot cracks are welding defects easily generated in the aluminum alloy welding process. The fluidity of liquid metal of a welding pool, the structural state of a welding seam and the eutectic dispersion state with low melting point have obvious influence on the generation of welding hot cracks. In the welding cooling process, the welding seam and the heat affected zone metal at the tail part of the molten pool are in a solid-liquid coexistence stage, and the solidified dendritic crystal framework is surrounded by liquid metal. When the liquid metal has good fluidity, the dendritic crystal gap can be filled through the flow of the liquid metal, and the healing of cracks is promoted; if the dendrites are developed and the liquid metal is weak in fluidity, the liquid metal is retained between the dendrites to form a liquid film having poor plasticity, and cracks are likely to form if the liquid film is subjected to tensile strain. The coarser the weld structure, the more pronounced the orientation of the columnar grains, and the more pronounced the tendency of the weld to generate hot cracks. The impurity elements are segregated in the grain boundary to form eutectic with low melting point, and welding hot cracks are easily generated. Therefore, how to improve the fluidity of the liquid metal, refine the weld structure, disperse the low-melting eutectic, reduce the segregation of impurity elements, and further suppress the generation of welding thermal cracks is a problem to be solved urgently.
Disclosure of Invention
The invention provides a welding device for inhibiting welding hot cracks, which is used for solving the problems that in the existing welding process, when dendritic crystals are developed and liquid metal is weak in fluidity, the liquid metal is retained between the dendritic crystals to form a liquid film with poor plasticity, if the liquid film is subjected to the action of tensile strain, cracks are easily formed, the texture of a welding seam is coarser, and the directionality of columnar crystals is more obvious; the impurity elements are segregated in the grain boundary to form eutectic with low melting point, the defect of welding hot cracks is easily generated, the flowing of liquid metal is promoted through arc oscillation, the grain structure of a welding seam is refined, the segregation of the impurity elements is reduced, the liquid metal flows back to a grain boundary liquefaction area of a heat affected area from a molten pool area, the generation of cracks is reduced, the resistance of crack propagation is increased, and the generation of the aluminum alloy welding hot cracks is restrained.
The invention also provides a welding system, which is used for solving the problems that in the existing welding process, when the dendritic crystal is developed and the liquidity of the liquid metal is weak, the liquid metal is retained between the dendritic crystal to form a liquid film with poor plasticity, if the liquid film is subjected to the action of tensile strain, cracks are easily formed, the texture of a welding seam is coarser, and the directionality of columnar crystals is more obvious; impurity elements are segregated in a grain boundary to form eutectic with low melting point, the defect of welding hot cracks is easily generated, an aluminum alloy welding liquid molten pool is stirred through a swinging electric arc, and the liquidity of liquid metal is increased: the weld structure is refined, the element segregation is reduced, the eutectic with low melting point is dispersed and discontinuously distributed, and the generation of cracks is reduced; the crystallization direction of columnar crystals is disturbed, the continuity of the liquid film is damaged, and the resistance of crack propagation is increased; promoting the liquid metal to flow back to the dendritic crystal gap and promoting the healing of the crack.
According to a first aspect of the present invention, there is provided a welding device that suppresses welding heat cracks, comprising: the device comprises a first fixing plate, a second fixing plate, a gas-electric slip ring, a hollow shaft driving unit, a conductive connecting rod, a bent conductive nozzle and a supporting rod;
the first fixing plate and the second fixing plate are arranged at intervals;
the gas-electric slip ring is connected with one side, facing the second fixing plate, of the first fixing plate;
the hollow shaft driving unit is connected with one side, facing the first fixing plate, of the second fixing plate;
the conductive connecting rod is connected with the hollow shaft driving unit and penetrates through the second fixing plate;
the bent conductive nozzle is connected with the conductive connecting rod at the outer side of the second fixing plate;
the supporting rods are uniformly distributed around the axial direction of rotation of the hollow shaft driving unit and are respectively connected with the first fixing plate and the second fixing plate;
the hollow shaft driving unit drives the conductive connecting rod to rotate, and the conductive connecting rod drives the bent conductive nozzle to swing.
The invention controls the swing of electric arc by driving the bending conductive nozzle to swing back and forth through the hollow shaft motor, stirs the liquid molten pool of aluminum alloy, promotes the flow of the liquid molten pool, generates scouring action on the tips of dendritic crystals, enables the tips of the dendritic crystals to be crushed and remelted, increases nucleation mass points, refines weld joint tissues and reduces the tendency of thermal cracking; the segregation of impurity elements is reduced, so that eutectic crystals with low melting points are dispersed and discontinuously distributed, and the generation of cracks is reduced; the crystallization direction of columnar crystals is disturbed, the continuity of the liquid film is damaged, and the resistance of crack propagation is increased; liquid metal is enabled to flow back to a grain boundary liquefaction area of a heat affected zone from a molten pool area, so that the liquid metal is enabled to fill dendritic crystal gaps, and cracks generated in a welding seam and the heat affected zone are healed in time.
It should be further noted that the welding current path, the shielding gas path and the welding wire feeding path in the arc swinging process are provided through the gas-electric slip ring, so that the problem that a welding cable, a shielding gas channel and a wire feeding pipe frequently swing in the arc swinging process is solved, and the welding process is more stable and reliable. The swing speed of the electric arc is controlled by the rotating speed of the hollow shaft motor, and the swing amplitude and the side wall residence time of the electric arc are controlled by the photoelectric sensor, so that the swing speed, the swing amplitude and the side wall residence time of the electric arc can be quantitatively controlled.
According to one embodiment of the invention, the gas-electric slip ring comprises: the gas-electric slip ring comprises a gas-electric slip ring stator, a gas-electric slip ring rotor, a first cable of the gas-electric slip ring and a second cable of the gas-electric slip ring;
the gas electric slip ring stator is connected with the first fixing plate;
the first cable of the gas-electric slip ring is connected with the gas-electric slip ring stator;
the second cable of the gas-electric slip ring is connected with the gas-electric slip ring rotor;
and the second cable of the gas-electric slip ring is connected with the conductive connecting rod and used for supplying power to the bent conductive nozzle.
Specifically, the embodiment provides an implementation manner of the gas-electric slip ring, and by arranging the gas-electric slip ring stator and the gas-electric slip ring rotor, the smooth welding current path is realized in the swing process of the hollow shaft driving unit driving the bent contact tip, and the power supply to the bent contact tip is ensured.
Furthermore, the first cable of the gas-electric slip ring and the second cable of the gas-electric slip ring are arranged, so that a welding current path is formed, the first cable of the gas-electric slip ring is connected with an output port of a welding gun of a welding power supply, one end of the second cable of the gas-electric slip ring is connected with the first cable of the gas-electric slip ring, the other end of the second cable of the gas-electric slip ring is connected with the conductive connecting rod, and power supply to the bent conductive nozzle through the conductive connecting rod is realized.
It should be noted that the hollow shaft driving unit may adopt a hollow shaft motor.
According to an embodiment of the invention, the gas-electric slip ring further comprises: the gas-electric slip ring comprises a first gas port and a second gas port;
the first air port of the gas-electric slip ring is connected with the other surface of the gas-electric slip ring stator, which is opposite to the gas-electric slip ring rotor;
the second gas port of the gas-electric slip ring is connected with the other surface of the gas-electric slip ring rotor, which is back to the gas-electric slip ring stator;
the second gas port of the gas-electric slip ring is connected with the conductive connecting rod through a pipeline;
the first gas port of the gas-electric slip ring, the second gas port of the gas-electric slip ring, the pipeline and the conductive connecting rod are communicated in sequence to form a protective gas passage.
Specifically, the embodiment provides another implementation manner of the gas-electric slip ring, and the first gas port and the second gas port of the gas-electric slip ring are arranged, so that the smooth passage of shielding gas is realized in the process of driving the bent contact tip to swing by the hollow shaft driving unit, and the conveying of the shielding gas in the welding process is ensured.
Furthermore, the output interface of the protective gas cylinder is communicated with the first gas port of the gas-electric slip ring, and the protective gas is conveyed to the molten pool through the output interface of the protective gas cylinder, the first gas port of the gas-electric slip ring, the second gas port of the gas-electric slip ring, the pipeline and the conductive connecting rod.
The conductive connecting rod is a hollow metal rod.
In an application scene, the pipeline is a hose, one end of the pipeline is connected with the second air port of the gas-electric slip ring, the other end of the pipeline is connected with the conductive connecting rod, and the pipeline is set to be the hose so that the pipeline can rotate along with the rotation of the gas-electric slip ring rotor and the conductive connecting rod.
According to an embodiment of the present invention, further comprising: the shunt is sleeved on one side, close to the bent conductive nozzle, of the conductive connecting rod and is communicated with the protective gas passage.
Specifically, the present embodiment provides an implementation of a flow divider, where the flow divider is disposed on a side of the conductive connecting rod close to the curved contact tip, and the flow divider is communicated with the shielding gas passage through the conductive connecting rod, so as to achieve flow division of the shielding gas through the flow divider.
It should be noted that a plurality of air outlets are uniformly distributed on the shunt, through holes communicated with the shunt are formed in the conductive connecting rod, and then the protective gas channel is communicated with the external space through the through holes in the conductive connecting rod and the air outlets in the shunt.
It should be further noted that the present invention does not describe a specific structure of the shunt, in practical applications, the specific structure of the shunt may refer to related designs in the art, and the shunt and the conductive connecting rod may be connected by a thread, a snap connection, a magnetic attraction, and the like.
In an application scenario, the outer side of the flow divider is covered with a flow guide groove, and the flow guide groove guides the protective gas flowing out of the flow divider to one side of the bent conductive nozzle in a more concentrated manner.
According to an embodiment of the present invention, further comprising: the conducting ring is arranged on one side, close to the pneumatic-electric slip ring rotor, of the hollow shaft driving unit and sleeved on the outer side of the conducting connecting rod;
wherein the gas-electric slip ring second cable is connected with the conductive ring;
the conducting ring supplies power to the hollow shaft driving unit and the bent conducting nozzle through the conducting connecting rod.
Specifically, the embodiment provides an implementation manner of the conducting ring, and through the conducting ring, electric energy transmitted by the gas-electric slip ring is transmitted to the hollow shaft driving unit and the bent conducting nozzle through the conducting ring and the conducting connecting rod.
It should be noted here that the electric energy transmission between the conductive ring and the conductive connecting rod can be realized through metal contact.
In one application scenario, the conductive ring and the conductive link rotate together.
In another application scenario, the conducting ring only supplies power to the bent conducting nozzle through the conducting connecting rod, and the hollow shaft driving unit obtains electric energy from the outside.
In yet another application scenario, the conductive ring powers the hollow shaft drive unit and the curved contact tip through the conductive link.
According to an embodiment of the present invention, further comprising: and the wire feeding pipe sequentially penetrates through the gas-electric slip ring stator, the gas-electric slip ring rotor and the conductive connecting rod and then sends welding wires to the bent conductive nozzle.
Specifically, the present embodiment provides an implementation manner of a wire feeding tube, the wire feeding tube is disposed equivalently to provide a passage through which a welding wire passes, and the wire feeding tube sequentially passes through the electrical slip ring stator, the electrical slip ring rotor and the conductive connecting rod, so as to ensure that the welding wire is fed from the outside to the curved contact tip.
In an application scene, the centers of the gas-electric slip ring stator and the gas-electric slip ring rotor are provided with through holes for the wire feeding pipe to pass through, and the conductive connecting rod is oppositely arranged at the center positions of the gas-electric slip ring stator and the gas-electric slip ring rotor, so that the wire feeding pipe can pass through the center of the whole device, and the welding wire can be directly conveyed to the bent conductive nozzle.
According to an embodiment of the present invention, further comprising: the device comprises a limiting baffle and a first sensor;
the limiting baffle is connected with one side, close to the bent conductive nozzle, of the conductive connecting rod;
the plurality of first sensors are arranged on one side, back to the first fixing plate, of the second fixing plate and used for measuring the swing angle of the bent contact tube.
Specifically, the present embodiment provides an implementation of a limit baffle capable of swinging along with the swinging of the bent contact tube, and at least three first sensors are provided, which are respectively used for measuring the swinging origin, the swinging left limit and the swinging right limit of the bent contact tube.
In an application scenario, the limiting baffle is connected with the conductive connecting rod or the shunt, and can swing synchronously with the bent conductive nozzle to trigger the first sensor and transmit a swing position signal of the bent conductive nozzle. When the bent contact tip passes through the center of the welding seam, the left side wall of the welding seam groove and the right side wall of the welding seam groove, the limiting baffle plate respectively triggers the first sensor of the swing origin, the first sensor of the swing left limit and the first sensor of the swing right limit light.
According to an embodiment of the present invention, the support bar includes: the first adjusting section, the second adjusting section and the adjusting joint;
the first adjusting section is connected with the first fixing plate;
the second adjusting section is connected with the second fixing plate;
the first adjusting section and the second adjusting section are connected through the adjusting joint;
the first adjusting section and/or the second adjusting section are telescopic rods with adjustable telescopic lengths, and the angle between the first adjusting section and the second adjusting section can be adjusted through the adjusting joint.
Specifically, the embodiment provides an implementation mode of the supporting rod, and the length and the angle of the supporting rod are adjusted by arranging a first adjusting section, a second adjusting section and an adjusting joint, so that the corresponding angle of the bent contact tube is adjusted when welding parts with different angles are welded; the first adjusting section and/or the second adjusting section are adjustable in length, the length of the supporting rod can be adjusted according to the requirement of the distance between the bent conductive nozzle and the welding part, the angle between the first adjusting section and the second adjusting section is changed by the adjusting joint, the 'ascending' and 'descending' of the bent conductive nozzle are realized in the welding process, and the problems that the swinging effect and the welding quality of the bent conductive nozzle are influenced due to the change of the angle of the welding part along the welding direction or the fluctuation caused by the flatness of the welding part are avoided.
In an application scene, four support rods are arranged, and each support rod comprises a first adjusting section, a second adjusting section and an adjusting joint; the length of the supporting rod is adjusted through the first adjusting section and the second adjusting section, and the adjusting joint ensures the adjustment of the angle of the first adjusting section and the second adjusting section, so that the 'ascending' and 'descending' of the bent conductive nozzle are realized in the welding process.
According to an embodiment of the present invention, further comprising: the second sensors are arranged on one side, opposite to the first fixing plate, of the second fixing plate;
the second sensors are arranged in one-to-one correspondence with the supporting rods and used for measuring the horizontal height of the bent contact tube.
Specifically, the present embodiment provides an implementation manner of a second sensor, which implements a change of a surface flatness of a welded part or an angle of the welded part by providing the second sensor, and further adjusts an extension length and an angle of each support rod according to a posture of a welding device for planning and suppressing a hot crack during welding, so as to satisfy an "uphill" and a "downhill" of a bent contact tip.
According to a second aspect of the present invention, a welding system is provided, which has the welding device for suppressing welding hot cracks.
One or more technical solutions in the present invention have at least one of the following technical effects: according to the welding device and the welding system for inhibiting the welding hot cracks, the electric arc swing is adopted to promote the flow of liquid metal, refine the grain structure of a welding seam, reduce the segregation of impurity elements, enable the liquid metal to flow back to a grain boundary liquefaction area of a heat affected area from a molten pool area, reduce the generation of cracks and increase the resistance of crack expansion, so that the generation of the aluminum alloy welding hot cracks is inhibited.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a welding apparatus for suppressing welding hot cracks according to the present invention;
FIG. 2 is a second schematic view showing the assembly relationship of the welding device for suppressing welding heat cracks according to the present invention;
FIG. 3 is a third schematic view showing the assembly relationship of the welding device for suppressing the welding hot cracks provided by the present invention;
FIG. 4 is a fourth view illustrating an assembly relationship of the welding device for suppressing welding heat cracks according to the present invention;
FIG. 5 is a schematic view of a support rod of the welding device for suppressing welding hot cracks according to the present invention;
fig. 6 is a second schematic structural relationship diagram of the support rod in the welding device for suppressing welding heat cracks provided by the present invention.
Reference numerals:
10. a first fixing plate; 20. A second fixing plate; 30. A hollow shaft drive unit;
40. a conductive connecting rod; 50. Bending the contact tube; 60. A support bar;
61. a first conditioning segment; 62. A second conditioning section; 63. Adjusting the joint;
70. an electro-pneumatic slip ring stator; 71. A pneumoelectric slip ring mover; 72. first line of gas-electric slip ring
A cable;
73. second line 74 of gas-electric slip ring, first gas 75 of gas-electric slip ring, and second gas of gas-electric slip ring
A cable; a mouth; a mouth;
80. a flow divider; 81. A diversion trench; 90. Conducting rings;
100. a wire feeding pipe; 110. A limit baffle; 120. A first sensor;
130. a second sensor; 140. A welding part; 150. A molten bath.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In some embodiments of the present invention, as shown in fig. 1 to 6, the present disclosure provides a welding device for suppressing welding heat cracks, including: the device comprises a first fixing plate 10, a second fixing plate 20, an air-electric slip ring, a hollow shaft driving unit 30, a conductive connecting rod 40, a bent conductive nozzle 50 and a supporting rod 60; the first fixing plate 10 and the second fixing plate 20 are arranged at intervals; the gas-electric slip ring is connected with one side of the first fixing plate 10 facing the second fixing plate 20; the hollow shaft driving unit 30 is connected to one side of the second fixing plate 20 facing the first fixing plate 10; the conductive connecting rod 40 is connected with the hollow shaft driving unit 30 and penetrates through the second fixing plate 20; the bent contact tip 50 is connected to the conductive link 40 at the outer side of the second fixing plate 20; a plurality of support rods 60 are uniformly distributed around the axial direction of rotation of the hollow shaft driving unit 30 and are respectively connected with the first fixing plate 10 and the second fixing plate 20; wherein, the hollow shaft driving unit 30 drives the conductive connecting rod 40 to rotate, and the conductive connecting rod 40 drives the bent conductive nozzle 50 to swing.
In detail, the invention provides a welding device for inhibiting welding hot cracks, which is used for solving the problems that in the existing welding process, when dendritic crystals are developed and liquid metal has weak fluidity, the liquid metal is retained between the dendritic crystals to form a liquid film with poor plasticity, cracks are easily formed under the action of tensile strain, the structure of a welding seam is coarser, and the directionality of columnar crystals is more obvious; the impurity elements are segregated in the grain boundary to form eutectic with low melting point, the defect of welding hot cracks is easily generated, the flowing of liquid metal is promoted through arc oscillation, the grain structure of a welding seam is refined, the segregation of the impurity elements is reduced, the liquid metal flows back to a grain boundary liquefaction area of a heat affected area from a molten pool 150 area, the generation of cracks is reduced, the resistance of crack propagation is increased, and the generation of the aluminum alloy welding hot cracks is restrained.
It should be noted that the invention controls the swing of the electric arc by driving the bending contact tube 50 to swing back and forth by the hollow shaft motor, stirs the aluminum alloy liquid molten pool 150, promotes the flow of the liquid molten pool 150, generates scouring action on the tips of the dendrites, makes the tips of the dendrites broken and remelted, increases nucleation particles, refines the weld structure, and reduces the tendency of thermal cracking; the segregation of impurity elements is reduced, so that eutectic crystals with low melting points are dispersed and discontinuously distributed, and the generation of cracks is reduced; the crystallization direction of columnar crystals is disturbed, the continuity of the liquid film is damaged, and the resistance of crack propagation is increased; liquid metal is enabled to flow back to a grain boundary liquefaction area of a heat affected zone from a molten pool 150 area, so that the liquid metal is promoted to fill dendritic crystal gaps, and cracks generated in a welding seam and the heat affected zone are healed in time.
It should be further noted that the welding current path, the shielding gas path and the welding wire feeding path in the arc swinging process are provided through the gas-electric slip ring, so that the problem that the welding cable, the shielding gas channel and the wire feeding pipe 100 frequently swing in the arc swinging process is solved, and the welding process is more stable and reliable. The swing speed of the electric arc is controlled by the rotating speed of the hollow shaft motor, and the swing amplitude and the side wall residence time of the electric arc are controlled by the photoelectric sensor, so that the swing speed, the swing amplitude and the side wall residence time of the electric arc can be quantitatively controlled.
In some possible embodiments of the invention, an electro-pneumatic slip ring comprises: the gas-electric slip ring comprises a gas-electric slip ring stator 70, a gas-electric slip ring rotor 71, a gas-electric slip ring first cable 72 and a gas-electric slip ring second cable 73; the gas electric slip ring stator 70 is connected with the first fixing plate 10; the gas-electric slip ring first cable 72 is connected with the gas-electric slip ring stator 70; the second cable 73 of the gas-electric slip ring is connected with the gas-electric slip ring mover 71; wherein the second cable 73 of the electro-pneumatic slip ring is connected to the conductive link 40 for supplying power to the bent contact tip 50.
Specifically, the present embodiment provides an implementation of the electrical slip ring, and by providing the electrical slip ring stator 70 and the electrical slip ring mover 71, the smooth welding current path is realized during the swing of the bent contact tip 50 driven by the hollow shaft driving unit 30, and the power supply to the bent contact tip 50 is ensured.
Further, the first cable 72 of the gas-electric slip ring and the second cable 73 of the gas-electric slip ring are arranged, so that a welding current path is formed, the first cable 72 of the gas-electric slip ring is connected with an output port of a welding gun of a welding power supply, one end of the second cable 73 of the gas-electric slip ring is connected with the first cable 72 of the gas-electric slip ring, and the other end of the second cable 73 of the gas-electric slip ring is connected with the conductive connecting rod 40, so that power is supplied to the bent conductive nozzle 50 through the conductive connecting rod 40.
It should be noted that the hollow shaft drive unit 30 may be a hollow shaft motor.
In some possible embodiments of the invention, the gas-electric slip ring further comprises: gas-electric slip ring first gas port 74 and gas-electric slip ring second gas port 75; the first air port 74 of the gas-electric slip ring is connected with the other side of the gas-electric slip ring stator 70, which is opposite to the gas-electric slip ring rotor 71; the second air port 75 of the gas-electric slip ring is connected with the other side of the gas-electric slip ring rotor 71, which is back to the gas-electric slip ring stator 70; wherein, the second air port 75 of the gas-electric slip ring is connected with the conductive connecting rod 40 through a pipeline; the first gas port 74 of the gas-electric slip ring, the second gas port 75 of the gas-electric slip ring, the pipeline and the conductive connecting rod 40 are communicated in sequence to form a protective gas passage.
Specifically, the present embodiment provides another implementation of the gas-electric slip ring, and by providing the first gas port 74 of the gas-electric slip ring and the second gas port 75 of the gas-electric slip ring, the shielding gas passage is unblocked during the swinging of the bent contact tip 50 driven by the hollow shaft driving unit 30, so that the shielding gas is delivered during the welding process.
Further, the output interface of the shielding gas cylinder is communicated with the first gas port 74 of the gas-electric slip ring, and the shielding gas is conveyed to the molten pool 150 through the output interface of the shielding gas cylinder, the first gas port 74 of the gas-electric slip ring, the second gas port 75 of the gas-electric slip ring, a pipeline and the conductive connecting rod 40.
The conductive link 40 is a hollow metal rod.
In an application scenario, the pipeline is a hose, one end of the pipeline is connected to the second air port 75 of the gas-electric slip ring, the other end of the pipeline is connected to the conductive connecting rod 40, and the pipeline is set to be a hose so that the pipeline can rotate along with the rotation of the gas-electric slip ring mover 71 and the conductive connecting rod 40.
In some possible embodiments of the present invention, the method further includes: and the shunt 80 is sleeved on one side of the conductive connecting rod 40 close to the bent contact tip 50, and is communicated with the protective gas passage.
Specifically, the present embodiment provides an embodiment of the flow divider 80, the flow divider 80 is disposed on the side of the conductive connecting rod 40 close to the curved contact tip 50, and the flow divider 80 is communicated with the shielding gas passage through the conductive connecting rod 40, so as to divide the shielding gas through the flow divider 80.
It should be noted that a plurality of air outlets are uniformly distributed on the splitter 80, a through hole communicated with the splitter 80 is formed in the conductive connecting rod 40, and then the shielding gas passage is communicated with the external space through the through hole in the conductive connecting rod 40 and the air outlet on the splitter 80.
It should be noted that the present invention does not describe the specific structure of the shunt 80, in practical applications, the specific structure of the shunt 80 can refer to the related design in the art, and the shunt 80 and the conductive connecting rod 40 can be connected by means of screw threads, clamping, magnetic attraction, etc.
In one application scenario, the flow splitter 80 is further covered with a flow guiding groove 81 on the outer side, and the flow guiding groove 81 guides the shielding gas flowing out from the flow splitter 80 to the side of the curved contact tip 50 in a more concentrated manner.
In some possible embodiments of the present invention, the method further includes: the conducting ring 90 is arranged on one side, close to the pneumatic-electric slip ring rotor 71, of the hollow shaft driving unit 30, and the conducting ring 90 is sleeved on the outer side of the conducting connecting rod 40; wherein the gas-electric slip ring second cable 73 is connected with the conductive ring 90; the conductive ring 90 powers the hollow shaft drive unit 30 and the curved contact tip 50 through the conductive link 40.
Specifically, the present embodiment provides an embodiment of the conducting ring 90, and by providing the conducting ring 90, the electric energy transmitted by the gas electric slip ring is transmitted to the hollow shaft driving unit 30 and the curved contact tip 50 through the conducting ring 90 and the conducting rod 40.
It should be noted that the electrical energy transmission between the conductive ring 90 and the conductive connecting rod 40 can be conducted through metal contact.
In one application scenario, the conductive ring 90 and the conductive link 40 rotate together.
In another application scenario, the conductive ring 90 only supplies power to the curved contact tip 50 through the conductive link 40, and the hollow shaft driving unit 30 obtains power from the outside.
In yet another application scenario, the conductive ring 90 powers the hollow shaft drive unit 30 and the curved contact tip 50 through the conductive link 40.
In some possible embodiments of the present invention, the method further includes: the wire feeding tube 100, the wire feeding tube 100 sequentially passes through the gas electric slip ring stator 70, the gas electric slip ring mover 71 and the conductive link 40, and then feeds the welding wire to the bending contact tip 50.
Specifically, the present embodiment provides an embodiment of the wire feeding tube 100, the wire feeding tube 100 is disposed to correspond to a passage for the welding wire to pass through, and the wire feeding tube 100 passes through the pneumoelectric slip ring stator 70, the pneumoelectric slip ring mover 71 and the conductive link 40 in sequence, thereby ensuring the welding wire to be fed from the outside to the bending contact tip 50.
In an application scenario, the centers of the electrical slip ring stator 70 and the electrical slip ring mover 71 are provided with through holes for the wire feeding tube 100 to pass through, and the conductive connecting rod 40 is also oppositely arranged at the center positions of the electrical slip ring stator 70 and the electrical slip ring mover 71, so that the wire feeding tube 100 is ensured to pass through the center of the whole device, and the welding wire is directly fed to the bent conductive nozzle 50.
In some possible embodiments of the present invention, the method further includes: a limit stop 110 and a first sensor 120; the limit baffle 110 is connected with one side of the conductive connecting rod 40 close to the bent conductive nozzle 50; the plurality of first sensors 120 are disposed on a side of the second fixing plate 20 facing away from the first fixing plate 10, and are used for measuring a swing angle of the bent contact tip 50.
Specifically, the present embodiment provides an implementation of the limit baffle 110 and the first sensor 120, the limit baffle 110 can swing along with the swinging of the bending contact tip 50, and at least three first sensors 120 are provided for measuring the swinging origin, the swinging left limit and the swinging right limit of the bending contact tip 50.
In one application scenario, the limit baffle 110 is connected to the conductive link 40 or the shunt 80 and can swing synchronously with the curved contact tip 50 to trigger the first sensor 120 to transmit a swing position signal of the curved contact tip 50. When the bent contact tip 50 passes through the center of the weld, the left side wall of the weld groove, and the right side wall of the weld groove, the limit baffle 110 triggers the first sensor 120 of the swing origin, the first sensor 120 of the swing left limit, and the first sensor 120 of the swing right limit light, respectively.
In some possible embodiments of the invention, the support bar 60 comprises: a first adjustment segment 61, a second adjustment segment 62 and an adjustment joint 63; the first adjusting section 61 is connected with the first fixing plate 10; the second adjusting section 62 is connected with the second fixing plate 20; the first adjusting section 61 and the second adjusting section 62 are connected through an adjusting joint 63; the first adjusting section 61 and/or the second adjusting section 62 are telescopic rods with adjustable telescopic lengths, and the angle between the first adjusting section 61 and the second adjusting section 62 can be adjusted through the adjusting joint 63.
Specifically, the embodiment provides an implementation manner of the supporting rod 60, and the first adjusting section 61, the second adjusting section 62 and the adjusting joint 63 are arranged to adjust the length and the angle of the supporting rod 60, so as to adjust the corresponding angle of the bent contact tip 50 when welding pieces 140 with different angles are welded; the first adjusting section 61 and/or the second adjusting section 62 are adjustable in length, the length of the supporting rod 60 can be adjusted according to the requirement of the distance between the bent contact tube 50 and the welding part 140, the adjusting joint 63 realizes the change of the angle between the first adjusting section 61 and the second adjusting section 62, and the 'ascending' and 'descending' of the bent contact tube 50 in the welding process are realized, so that the problems that the swinging effect and the welding quality of the bent contact tube 50 are influenced due to the change of the angle of the welding part 140 along the welding direction or the fluctuation caused by the flatness of the welding part 140 are avoided.
In an application scenario, four support rods 60 are provided, and each support rod 60 comprises a first adjusting section 61, a second adjusting section 62 and an adjusting joint 63; the length of the supporting rod 60 is adjusted by the first adjusting section 61 and the second adjusting section 62, and the adjusting joint 63 ensures that the angles of the first adjusting section 61 and the second adjusting section 62 are adjusted, so that the conductive nozzle 50 is bent to go up and down during the welding process.
In some possible embodiments of the present invention, the method further includes: a plurality of second sensors 130, wherein the second sensors 130 are arranged on one side of the second fixing plate 20, which faces away from the first fixing plate 10; wherein, the second sensors 130 are disposed in one-to-one correspondence with the support rods 60 for measuring the horizontal height of the bent contact tip 50.
Specifically, the present embodiment provides an implementation of the second sensor 130, which implements the change of the surface flatness of the welding part 140 or the angle of the welding part 140 by providing the second sensor 130, and further, according to the posture of the welding device for planning and inhibiting the welding hot cracks, adjusts the extension length and the angle of each supporting rod 60 to satisfy the "uphill" and the "downhill" of the bent contact tip 50.
In some embodiments of the present invention, the present disclosure provides a welding system having a welding device for inhibiting welding hot cracks as described above.
In detail, the invention also provides a welding system, which is used for solving the problems that in the existing welding process, when the dendritic crystal is developed and the liquid metal has weaker fluidity, the liquid metal is retained between the dendritic crystal to form a liquid film with poorer plasticity, if the liquid film is subjected to the action of tensile strain, cracks are easily formed, the welding seam structure is coarser, and the directionality of columnar crystals is more obvious; the impurity elements are segregated in the grain boundary to form eutectic with low melting point, the defect of welding hot cracks is easily generated, the aluminum alloy welding liquid molten pool 150 is stirred through the swing electric arc, and the liquidity of liquid metal is increased: the weld structure is refined, the element segregation is reduced, the eutectic with low melting point is dispersed and discontinuously distributed, and the generation of cracks is reduced; the crystallization direction of columnar crystals is disturbed, the continuity of the liquid film is damaged, and the resistance of crack propagation is increased; promoting the liquid metal to flow back to the dendritic crystal gap and promoting the healing of the crack.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (10)
1. A welding device that suppresses weld cracking, comprising: the device comprises a first fixing plate, a second fixing plate, a gas-electric slip ring, a hollow shaft driving unit, a conductive connecting rod, a bent conductive nozzle and a supporting rod;
the first fixing plate and the second fixing plate are arranged at intervals;
the gas-electric slip ring is connected with one side, facing the second fixing plate, of the first fixing plate;
the hollow shaft driving unit is connected with one side, facing the first fixing plate, of the second fixing plate;
the conductive connecting rod is connected with the hollow shaft driving unit and penetrates through the second fixing plate;
the bent conductive nozzle is connected with the conductive connecting rod at the outer side of the second fixing plate;
the supporting rods are uniformly distributed around the axial direction of rotation of the hollow shaft driving unit and are respectively connected with the first fixing plate and the second fixing plate;
the hollow shaft driving unit drives the conductive connecting rod to rotate, and the conductive connecting rod drives the bent conductive nozzle to swing.
2. The welding device for inhibiting hot cracks in welding of claim 1, wherein the gas-electric slip ring comprises: the gas-electric slip ring comprises a gas-electric slip ring stator, a gas-electric slip ring rotor, a first cable of the gas-electric slip ring and a second cable of the gas-electric slip ring;
the gas electric slip ring stator is connected with the first fixing plate;
the first cable of the gas-electric slip ring is connected with the gas-electric slip ring stator;
the second cable of the gas-electric slip ring is connected with the gas-electric slip ring rotor;
and the second cable of the gas-electric slip ring is connected with the conductive connecting rod and used for supplying power to the bent conductive nozzle.
3. The welding device for inhibiting hot cracks in welding of claim 2, wherein the gas-electric slip ring further comprises: the gas-electric slip ring comprises a first gas port and a second gas port;
the first air port of the gas-electric slip ring is connected with the other surface of the gas-electric slip ring stator, which is opposite to the gas-electric slip ring rotor;
the second gas port of the gas-electric slip ring is connected with the other surface of the gas-electric slip ring rotor, which is back to the gas-electric slip ring stator;
the second gas port of the gas-electric slip ring is connected with the conductive connecting rod through a pipeline;
the first gas port of the gas-electric slip ring, the second gas port of the gas-electric slip ring, the pipeline and the conductive connecting rod are communicated in sequence to form a protective gas passage.
4. The welding device for suppressing hot cracks in welding according to claim 3, further comprising: the shunt is sleeved on one side, close to the bent conductive nozzle, of the conductive connecting rod and is communicated with the protective gas passage.
5. The welding device for suppressing hot cracks in welding according to claim 2, further comprising: the conducting ring is arranged on one side, close to the pneumatic-electric slip ring rotor, of the hollow shaft driving unit and sleeved on the outer side of the conducting connecting rod;
wherein the gas-electric slip ring second cable is connected with the conductive ring;
the conducting ring supplies power to the hollow shaft driving unit and the bent conducting nozzle through the conducting connecting rod.
6. The welding device for suppressing hot cracks in welding according to claim 2, further comprising: and the wire feeding pipe sequentially penetrates through the gas-electric slip ring stator, the gas-electric slip ring rotor and the conductive connecting rod and then sends welding wires to the bent conductive nozzle.
7. The welding device for suppressing hot cracks in welding according to claim 1, further comprising: the device comprises a limiting baffle and a first sensor;
the limiting baffle is connected with one side, close to the bent conductive nozzle, of the conductive connecting rod;
the plurality of first sensors are arranged on one side, back to the first fixing plate, of the second fixing plate and used for measuring the swing angle of the bent contact tube.
8. The welding device for suppressing the hot cracks in welding according to any one of claims 1 to 7, wherein said support rod comprises: the first adjusting section, the second adjusting section and the adjusting joint;
the first adjusting section is connected with the first fixing plate;
the second adjusting section is connected with the second fixing plate;
the first adjusting section and the second adjusting section are connected through the adjusting joint;
the first adjusting section and/or the second adjusting section are telescopic rods with adjustable telescopic lengths, and the angle between the first adjusting section and the second adjusting section can be adjusted through the adjusting joint.
9. The welding device for suppressing hot cracks in welding according to claim 8, further comprising: the second sensors are arranged on one side, opposite to the first fixing plate, of the second fixing plate;
the second sensors are arranged in one-to-one correspondence with the supporting rods and used for measuring the horizontal height of the bent contact tube.
10. A welding system having a welding device for suppressing hot cracks in welding as claimed in any one of claims 1 to 9.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648169.8A CN113399801B (en) | 2021-06-10 | 2021-06-10 | Welding device and welding system for inhibiting welding hot cracks |
| JP2023575956A JP2024521438A (en) | 2021-06-10 | 2022-01-05 | Welding equipment and welding system for suppressing hot cracking in welding |
| EP22819055.9A EP4257278A4 (en) | 2021-06-10 | 2022-01-05 | Welding apparatus for suppressing welding thermal cracks, and welding system |
| KR1020247000836A KR20240011863A (en) | 2021-06-10 | 2022-01-05 | Welding devices and welding systems that suppress weld thermal cracks |
| US18/547,147 US20240316681A1 (en) | 2021-06-10 | 2022-01-05 | Welding device for suppressing welding hot cracks, and welding system |
| PCT/CN2022/070338 WO2022257446A1 (en) | 2021-06-10 | 2022-01-05 | Welding apparatus for suppressing welding thermal cracks, and welding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648169.8A CN113399801B (en) | 2021-06-10 | 2021-06-10 | Welding device and welding system for inhibiting welding hot cracks |
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| Publication Number | Publication Date |
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| CN113399801A true CN113399801A (en) | 2021-09-17 |
| CN113399801B CN113399801B (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110648169.8A Active CN113399801B (en) | 2021-06-10 | 2021-06-10 | Welding device and welding system for inhibiting welding hot cracks |
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| Country | Link |
|---|---|
| US (1) | US20240316681A1 (en) |
| EP (1) | EP4257278A4 (en) |
| JP (1) | JP2024521438A (en) |
| KR (1) | KR20240011863A (en) |
| CN (1) | CN113399801B (en) |
| WO (1) | WO2022257446A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022257446A1 (en) * | 2021-06-10 | 2022-12-15 | 中车青岛四方机车车辆股份有限公司 | Welding apparatus for suppressing welding thermal cracks, and welding system |
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- 2022-01-05 US US18/547,147 patent/US20240316681A1/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| EP4257278A4 (en) | 2024-10-02 |
| KR20240011863A (en) | 2024-01-26 |
| WO2022257446A1 (en) | 2022-12-15 |
| JP2024521438A (en) | 2024-05-31 |
| CN113399801B (en) | 2023-04-21 |
| EP4257278A1 (en) | 2023-10-11 |
| US20240316681A1 (en) | 2024-09-26 |
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